Hi hello! Happy to see another fellowman from my country here.Mr Chang, where did you tune your car in Kuala Lumpur?
I’m from Ipoh famous for its bean sprouts chicken (Nga Choy Kai) & shredded chicken noodle soup (Kai Si Hor Fun)
Hope to hear from you soon.
I do have some WOT logs and partial throttle driving logs which include air intake temperature. But I am not sure whether the temperature was measured pre or post manifold as it was done via the OBD port and it is reporting whatever the ECU is seeing.@changchewsoon
Thanks for your very comprehensive rundown.
You are indeed fortunate to have such a competent Tuner, particularly as he has to work with the tyranny of distance.
Given I know you (and he) are at least as paranoid as myself when it comes to data acquisition, have either of you spent much time looking at inlet manifold charge temps?
EG in 30 to 40C ambient, what inlet manifold charge temps would you usually see:-
a) at 100 KPH cruise ?
b) WOT at the end of a 100 to 200 KPH timing run?
You are certainly right on point when it comes to the effect of trans oil temperature on the life of your transmission when putting 50% over the rated torque limit through it.
Do you know what % reduction in shift time / slippage he programmed in? That is also extremely important, as is the clutch plate apply pressure, of course.
@changchewsoonI do have some WOT logs and partial throttle driving logs which include air intake temperature. But I am not sure whether the temperature was measured pre or post manifold as it was done via the OBD port and it is reporting whatever the ECU is seeing.
At 24-26 degree ambient, on partial throttle the temperature is between 38-45 degrees when driving around town between gear 1 to gear 4.
At 24-26 degree ambient, on wide open throttle the temperature is between 38-52 degrees. During the first 4 gears, temperature seems stable at 45 degrees, and on the 5th gear until redline the temperature rises very quickly and within one gear itself it could rise as much as 7 degrees.
Unfortunately I completely did not log anything much related to the transmission besides some torque related intervention by the TCU, and definitely nothing related to the clutch pressure. I am not even sure if there is a channel present to log for clutch pressure. Actually, I will try to identify it and log it the next time. It will be good to know for sure.
What you you saying about your passenger mass ??!!Guys the best tune you can get is to shed your passenger.
My wife is away with my daughters for one of their hen do's, so for the first time ever, in any volume, I've been driving without her in the passenger seat. Don't forget my A45s is a lockdown car so it's the way it's worked out in terms of both of us being in it almost always.
But wow, without her in the car it's just a totally different, with what feels like a massive tune. It's totally transformed my driving experience. Okay I can floor the throttle more often as there is no one to keep me in check, but when it moves it's absolutely phenomenal. It's the car I didn't know I had
I don’t know what mass we’re talking about as it’s top secret and she won’t tell me. But if it’s say 11 stones, totally hypocritically, that reduces the bhp/ton. But as I say it’s a totally different car with just me in it.What you you saying about your passenger mass ??!!
Yup, mass will do it every time
Just ask Colin Chapman !!